@article{article, title  = {{Computer Storage and Retrieval of Generic Chemical Structures in Patents. 12. Principles of Search Operations Involving Parameter Lists: Matching-Relations, User-Defined Match Levels, and Transition from the Reduced Graph Search to the Refined Search}},

 url = {{http://eprints.whiterose.ac.uk/9242/ }},

 year = {{1991}},

 month = {{5}},

 author = {{Dethlefsen W and Lynch MF and Gillet VJ and Downs GM and Holliday JD and Barnard JM}},

 doi = {{10.1021/ci00002a010}},

 volume = {{31}},

 journal = {{Journal of Chemical Information and Computer Sciences}},

 issue = {{2}},

 pages = {{253-260}},

 note = {{Accessed on 2024/12/22}}}